HD74LS293P datasheet(1/8 Pages) RENESAS

部件名	HD74LS293P

功能描述	4-bit Binary Counter

PDF	8 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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1 / 8 page

Rev.3.00, Jul.15.2005, page 1 of 7

HD74LS293

4-bit Binary Counter

REJ03D0477–0300

Rev.3.00

Jul.15.2005

This counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and divide-

by-eight counter. This counter has a gated zero reset. To use the maximum count length of this counter, the B input is

connected to the QA output. The input count pulses are applied to input A and the outputs are as described in the

appropriate function table.

Features

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LS293P

DILP-14 pin

PRDP0014AB-B

(DP-14AV)

P

—

Pin Arrangement

(Top view)

GND

1

2

3

4

5

6

7

14

8

9

10

11

12

13

NC

QC

QD

QB

NC

QB

VCC

R0(2)

R0(1)

B

QA

R0(2)

A

QC

QD

QA

Outputs

Inputs

Outputs

Function Table

Reset / Count

Reset Input

Outputs

R0 (1)

R0 (2)

QD

QC

QB

QA

H

L

X

Count

X

L

Count

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